linux-kernel - [PATCH 0/2] mmc: rtsx: add check before sending request

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Date:	Wed, 14 Jan 2015 11:09:10 +0800
From:	<micky_ching@...lsil.com.cn>
To:	<chris@...ntf.net>, <ulf.hansson@...aro.org>,
	<sameo@...ux.intel.com>
CC:	<gregkh@...uxfoundation.org>, <dan.carpenter@...cle.com>,
	<devel@...uxdriverproject.org>, <linux-kernel@...r.kernel.org>,
	<linux-mmc@...r.kernel.org>, <rogerable@...ltek.com>,
	<wei_wang@...lsil.com.cn>, Micky Ching <micky_ching@...lsil.com.cn>
Subject: [PATCH 0/2] mmc: rtsx: add check before sending request

From: Micky Ching <micky_ching@...lsil.com.cn>

Add check before sending request can make request return faster.
- finish request if no card exist
  This can make request finish faster, especial for some sdio card,
  when card removed, there still a lot of command pending,
  if we check card exist and stop request, the card will disappear
  faster in user space.

- check sg_count before long data xfer
  modify sg_count type unsigned -> int, because dma_map_sg() return
  int, and this value can be negative to indicate some error occurs.

Micky Ching (2):
  mmc: rtsx: finish request if no card exist
  mmc: rtsx: check sg_count before long data xfer

 drivers/mmc/host/rtsx_pci_sdmmc.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

-- 
1.9.1

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